Home / 20,974.13-31,475.76-13,560.20

Finding the Fourth Proportional to 20,974.13, 31,475.76 and 13,560.20

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Solution

The fourth proportional to 20,974.13, 31,475.76 and 13,560.20 is: 20,349.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.13 : 31,475.76 = 13,560.20 : x
  2. Step 2: Convert to fraction form
    20,974.13/31,475.76 = 13,560.20/x
  3. Step 3: Cross multiply
    20,974.13x = 31,475.76 × 13,560.20
  4. Step 4: Simplify right side
    20,974.13x = 426,817,443.37
  5. Step 5: Solve for x
    x = 426,817,443.37/20,974.13
  6. Step 6: Final answer
    x = 20,349.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.